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Numerical Algorithms Group

Dr. rer. nat. Alexander Keller

Personal Information - Born June 12, 1968 in Karlsruhe, Germany
- At the University of Kaiserslautern since 1988
- With the Numerical Algorithms Group since 1993
- Ph.D. defended on Friday, the 13th of June, 1997
- Scientific advisor for mental images since June, 1998
- Member of the Sound Express Big Band
Research My main research interests include
    - computer graphics,
    - computer vision,
    - Monte Carlo and quasi-Monte Carlo methods,
    - highly uniform point sets,
    - particle methods for transport equations, and
    - wavelets and the lifting scheme.
Strictly deterministic sampling in computer graphics.
Faster numerical algorithms for photorealistic image synthesis.
- SamplePack: Superfast low discrepancy points.
Teaching Current lecture: Monte Carlo Methods for Photorealistic Image Synthesis (Winter term 2002/3)
Contact Information
Dr. Alexander Keller
Universität Kaiserslautern
Fachbereich Informatik, Geb. 36/212
Postfach 3049
D-67653 Kaiserslautern
++49-631-205 3345 (Voice)
++49-631-205 3558 (Fax)


Strukturierung der Animationsprogrammierung
GMD-Studien Nr. 223, November 1993, pp. 109 - 111.
Quasi-Monte Carlo Methods in Computer Graphics, Part I: The QMC-Buffer
with Stefan Heinrich
Technical Report 242/94, University of Kaiserslautern.
Quasi-Monte Carlo Methods in Computer Graphics, Part II: The Radiance Equation
with Stefan Heinrich
Technical Report 243/94, University of Kaiserslautern.
A Quasi-Monte Carlo Algorithm for the Global Illumination Problem in the Radiosity Setting
Lecture Notes in Statistics, 106 (ed. by H. Niederreiter and P. Shiue), pp. 239 - 251.
Quasi-Monte Carlo Methods in Computer Graphics
in O. Mahrenholtz, K. Marti, and R. Mennicken (eds.), ICIAM / GAMM 95, Special Issue of ZAMM, Issue 3: Applied Stochastics and Optimization, pp.109-112, 1996.
Quasi-Monte Carlo Methods in Computer Graphics: The Global Illumination Problem
Lectures in Applied Mathematics, Vol. 32, 1996, pp. 455-469.
The fast Calculation of Form Factors using Low Discrepancy Point Sequences
Proceedings of the 12. Spring Conference on Computer Graphics, Bratislava, 1996, pp. 195 - 204.
Quasi-Monte Carlo Radiosity (extended version)
Rendering Techniques '96, (ed. by X. Pueyo and P. Schröder), Springer, 1996, pp. 101-110.
Instant Radiosity
Computer Graphics Proceedings, Annual Conference Series, SIGGRAPH 97, pp. 49-56.
Creative Applications Lab (CAL) Content: Download the demo software presented at SIGGRAPH 97 (HTML and binaries for any SGI >= O2) !
Quasi-Monte Carlo Methods for Photorealisitic Image Synthesis
Ph.D. thesis, Shaker Verlag, Aachen 1998, ISBN 3-8265-3330-5.
The Quasi-Random Walk
Lecture Notes in Statistics, 127 (ed. by H. Niederreiter, P. Hellekalek, G. Larcher and P. Zinterhof), pp. 277 - 291.
Hierarchical Monte Carlo Image Synthesis
Mathematics and Computers in Simulation, Vol. 55, no. 1-3, pp.79-92.
Due to the very unprofessional editing procedure at Elsevier Science Publishers many typos have been introduced into the journal version of the publication. In addition the quality of the reproduction of all images and graphs is below standard. Therefore you better download the version from this website.
Efficient Importance Sampling Techniques for the Photon Map
with Ingo Wald
Proceedings of VISION, MODELING, AND VISUALIZATION 2000, IOS Press, pp. 271-279.
Metropolis Light Transport for Participating Media
with Mark Pauly and Thomas Kollig
Rendering Techniques 2000, (ed. by H. Rushmeier and B. Peroche), Springer, 2000
Random Fields on Rank-1 Lattices
Technical Report 307/01, University of Kaiserslautern
Interleaved Sampling
with Wolfgang Heidrich
in Rendering Techniques 2001, (ed. by S. Gortler and K. Myszkowski), Springer, 2001, pp. 269-276
Fast Generation of Randomized Low Discrepancy Points Sets
with Ilja Friedel
in K.-T. Fang, F.J. Hickernell, and H. Niederreiter (eds.), Monte Carlo and Quasi-Monte Carlo Methods 2000, Springer-Verlag, Berlin, pp. 257-273.
Efficient Bidirectional Path Tracing by Randomized Quasi-Monte Carlo Integration
with Thomas Kollig
in K.-T. Fang, F.J. Hickernell, and H. Niederreiter (eds.), Monte Carlo and Quasi-Monte Carlo Methods 2000, Springer-Verlag, Berlin, pp. 290-305.
Tiled Blue Noise Samples
with S. Hiller and O. Deussen
Proceedings of VISION, MODELING, AND VISUALIZATION 2001, IOS Press, pp. 265-271
Trajectory Splitting by Restricted Replication
Technical Report 316/01, University of Kaiserslautern
Monte Carlo & Beyond, - Course Material -
Technical Report 320/02, University of Kaiserslautern
This course was first held at the Caltech July 30th through August 3rd, 2001. The material is from the block course at the ETH Zürich held early 2002.
Interactive Global Illumination using Fast Ray Tracing
with I. Wald, T. Kollig, C. Benthin, and P. Slusallek
in Rendering Techniques 2002, (ed. by P. Debevec and S. Gibson), Springer, 2002, pp. 15-24.
Efficient Multidimensional Sampling
with T. Kollig
in G. Drettakis, and H.-P. Seidel (eds.), Computer Graphics Forum, Vol. 21 (2002), No. 3, pp. 557-563.
Strictly Deterministic Sampling Methods in Computer Graphics
(mental images technical report, 2001) in "Monte Carlo Ray Tracing", SIGGRAPH'2003 Course, San Diego, July 2003, to appear.
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